FNIRSI FNB48P is an advanced USB port tester for accurate checking of charging and fast-charging protocols. It enables detailed monitoring of voltage, current, power and other parameters, offers smart cable diagnostics, measurement logging, and clear graphs on a 1.77" HD display. Thanks to a rugged CNC metal housing and automatic screen rotation, it is ideal for service work, charger testing, and everyday electronics work.
The FNIRSI FNB48P tester is a universal tool for analyzing charging scenarios across modern and older devices. It supports multiple interfaces (USB-A, USB-C and Micro USB) and handles up to 6.5 A, making it suitable for testing high-power chargers, power banks, and cables. It displays key charging data in real time and helps quickly detect incompatibility, line losses, or unstable power.
FNB48P recognizes a wide range of fast-charging standards and verifies their correct operation. It also includes advanced cable features—reading data from the PD e-marker (CC line) and identifying DASH cables, including internal resistance measurement to assess quality and energy loss.
The large 1.77" HD display offers several display modes including graphs (voltage/current, offline logging, or power ripple). The built-in gravity sensor enables automatic display rotation, and the device can store up to 10 groups of measured data. With algorithms for battery capacity calculation, you can easily determine real charging efficiency and the effective capacity of the tested device.
- Interface support: USB-A, USB-C, Micro USB + PD COM
- Fast-charging support: Apple 2.4A, QC2.0/QC3.0, USB PD, Samsung AFC, Huawei FCP/SCP, OPPO VOOC, DASH/WARP/SuperVOOC, PE+ 1.1/2.0
- Cable diagnostics: e-marker, DASH identification, internal resistance measurement
- Durable design: CNC-milled metal housing
Specifications
- Manufacturer
- FNIRSI
- Model
- FNB48P
- Monitored voltage
- Range: 4–24 V; resolution: 0.00001 V; accuracy: ± (0.2% + 2)
- Monitored current
- Range: 0–6.5 A; resolution: 0.00001 A; accuracy: ± (0.5% + 2)
- Monitored power
- Range: 0–156 W; resolution: 0.00001 W; accuracy: ± (0.5% + 2)
- Equivalent load resistance
- Range: 0–9999.9 Ω; resolution: 0.0001 Ω; accuracy: ± (0.5% + 2)
- D+ / D- line voltage
- Range: 0–3.3 V; resolution: 0.001 V; accuracy: ± (1.0% + 2)
- Device temperature
- Resolution: 1 °C; accuracy: ± (1.2% + 3)
- Capacity
- Range: 0–9999.99 Ah; resolution: 0.00001 Ah
- Consumed energy
- Range: 0–9999.99 Wh; resolution: 0.00001 Wh
- Conductor resistance
- Range: 0–9999.9 Ω; resolution: 0.0001 Ω
- Operating time
- Maximum: 99 days, 23 hours, 59 minutes, 59 seconds; resolution: 1 s
- Data logging time
- Maximum: 999 hours, 59 minutes, 59 seconds; resolution: 1 s
